434 
93. AEACE^. 
spadix. Perianth none, or of 4 — 8 scales. Stam. many or 
definite. Anth. turned outwards. Ovary free, with 1 or more 
cells. Stigma sessile. Fr. succulent. Embryo slit on one side. 
Arum has abundant raphides, Acorii^ none. 
Tribe I. OEOXTE^E. Spath like a continuation of stem. 
Fl. perfect. i 
1. AcoEus. Fl. on a sessile spadix, appearing lateral. Peri- 
anth 6-leaved, inferior, persistent. Stam. 6, filiform. 
Ir.Tl. ARE^E. Spath convolute at the base. Fl. monoecious. 
Perianth 0. 
2. Aktjm. Perianth 0. Male fl. of 1 sessile 2-celled anther. 
Fem. fl. placed lower, of 1 pistil. Top of spadix naked. 
1. Ac'oeus Linn. Sweet Flag. 
1. A. Cal'amus (L.) ; st. with a long leaflike prolongation 
(or spath) beyond the spadix.— i7. B. 356. R. x. 429. — St. 5 — 
6 feet high, resembling the 1., swordshaped, flattened. Spadix 
completely covered by the flowers, 2 — 3 in. long, lateral. St. 
and 1. sweet-scented when crushed. — In water, rare ; except in 
Xorf. and Suff. ^Between Lisburn and iloira, Co. Down. P. 
VI. VII. E. I. 
2. A'rum Linn. Cuckoo-iDint. 
1. A. maciddtum (L.)\ I. >)ernal all radical hastate-sagittate 
with deflexed lobes, petiole as long as leaf-limb, spadix club- 
shaped straight falling short of the spath. — E. B. 1298. R. vii. 
a — Root tuberous. L. with branching veins, green or spotted 
with purple. Spath ventricose below and above, constricted 
in the middle, with inflexed edges when open. Spadix us%ially 
purple blunt ; with ovaries at the base ; above them whorls of 
stamens ; then a few filaments, probably abortive pistils ; club 
naked. Berries scarlet, remaining after the rest of the plant 
has disappeared ; seeds mostly 4 or 3, or rarely 2. — Hedge- 
banks and thickets. P. IV. V. E. S. I. 
2. A.it'd'icuiii (Mill.) ; /. appmriwj before the winter all radical 
triangular-hastate with divaricate lobes, petiole longer than leaf- 
limb, spadix clubshaped straight falling short of the widely 
spread spath. — R. vii. 11. — L. dark blue-green, sometimes with 
yellowish veins, rarely spotted, blunt. Spath ventricose below, 
opening nearly flat and very broad ahove, folding down in front 
when fl. are in perfection so as to close the opening like a flap, 
